2D6 



Dr. G. Gore on the Molecular 



Influence of Degree of Aqueous Dilution upon the Molecular 

 Constitution fyc. 



Mixture "A." 

 Experiment 4. — Six solutions were made, each containing 

 1 molecular weight proportion of anhydrous sodium sulphate ; 

 and six others, each containing 2 of nitric acid. These were 

 first diluted to different degrees, and then mixed to form six 

 liquids of the following degrees of strength : — 



Table XII.— Na 2 S0 4 + 2HN0 3 . 



No. 1 contained 1 grain of the mixture in 10'34 grains of water. 



15-50 



155-00 



310-00 



1,550-00 



15,50000 



Each of these solutions had to be further diluted previous 

 to measuring their energy. The amounts of their voltaic 

 energy were as follows : — 



Table XIII. 



No. 1. Between 30,511 and 33,917 at 12° O. Average 32,214. 



„ 2 



„ 



1 



„ 3 



tt 



1 



„ 4 



lt 



1 



„ 5 



i) 



1 



„ 6 



,, 



1 



32,493 

 41,005 

 70,457 



73,810 



35,714 „ 125 

 45,600 „ 13 

 77,500 „ 12 

 81,578 „ 11 



34,103. 

 43,302. 

 73,977. 

 77,694. 



The mixture which was formed by adding together the 

 weakest solutions gave the greatest energy and the same 

 amount as "A" in Table I.; and the ones formed from the two 

 strongest solutions gave the least energy and the same as "B" 

 in that table. The only way in which I have been able to 

 form the isomeric liquid "A" has been by first mixing very 

 dilute cold solutions in the manner just described. 



It is evident from the numerical results, that the degree of 

 strength of the original solutions of sulphate of sodium and 

 nitric acid at the moment of mixing largely affected the mole- 

 cular structure, the distribution of acids and base, and the 

 amount of voltaic energy of the resulting mixture ; and that 

 these were more or less determined or fixed at that moment, 

 and were not rendered alike in the different cases by the 

 subsequent dilution necessary for the voltaic measurement. 

 Similar results occurred with a mixture of potassic iodide and 

 chlorine (Roy. Soc. Proc. vol. xlv. p. 440). Probably the 

 smaller amounts of voltaic energy of the liquids made from 

 the more concentrated original solutions were due to more 



